Lock



FIG. 1 is a front perspective view of a lock showing the new design;

FIG. 2 is a front view of the lock of FIG. 1;

FIG. 3 is a right side view of the lock of FIG. 1;

FIG. 4 is a left side view of the lock of FIG. 1;

FIG. 5 is a top view of the lock of FIG. 1;

FIG. 6 is a bottom view of the lock of FIG. 1; and,

FIG. 7 is a rear view of the lock of FIG. 1.

The portions of the Figures shown in broken lines are for illustrative purpose only and form no part of the claimed design. 

CLAIM I claim the ornamental design for a lock, as shown and described. 